Contact Information: Contact: Jocelyn Kremer BIOPAC Systems, Inc. 42 Aero Camino, Goleta, CA 93117 E-mail: Tel 805.685.0066 x128
BIOPAC Announces MRI Gradient Artifact Removal Tools for ECG and EMG Data
New Methodology Removes Artifact
| Source: BIOPAC
GOLETA, CA--(Marketwire - February 10, 2009) - BIOPAC Systems,
Inc. announces a new method to remove gradient artifact from
physiological data recorded inside a functional MRI. The new technique
allows researchers to record ECG, heart rate and R-R interval data from a
subject while the MRI is taking images. The same technique also
significantly improves the quality of EMG data.
The new techniques allow researchers to record physiological data from a
subject in the MRI. The brain is scanned while the subject receives a
combination of visual, auditory, somatosensory, and electrical stimulation.
The stimulation activates different regions of the brain and allows
researchers to image the brain while the brain responds to the stimuli. The
physiological data, stimulation and MRI images are all highly synchronized.
This allows researchers to compare physiological responses and images to
precise stimuli.
BIOPAC has a range of MRI products to record almost every physiological
signal from inside the scanner. A range of isolated and filtered MRI cables
provide the conduit between the subject in the scanner and the MP150/MP100 data acquisition
systems and
amplifiers that are located in the control room. BIOPAC MRI-compatible
electrodes and
MRI-compatible transducers connect to the filter cables and the
subject.
AcqKnowledge®
software (included with the MP150 system) allows researchers to identify
the frequency of the gradient noise and then remove it from the signal. The
gradient artifact can be removed in real-time and during post-acquisition
processing.
Alan Macy, Head of Research Development at BIOPAC, is responsible for the
development of the new techniques. Macy said, "There will be a big
improvement in the quality of the signals and data collected from inside
the scanner as BIOPAC continues to invest in MRI research. We are
constantly learning about the problems associated with recording
physiological data in the MRI and developing new tools for improving signal
quality."
BIOPAC has published two Application Notes that help researchers to use the
new techniques and improve the quality of their data. These Application
Notes are part of a series that assist researchers in collecting high
quality data from inside the MRI.
For more information, review MRI -
Human and Animal Studies. To receive a copy of the new MRI Application
Notes, contact BIOPAC Systems, Inc.